Pure copper components fabricated by cold spray (CS) and selective laser melting (SLM) technology

SURFACE & COATINGS TECHNOLOGY

卷:395

Article; Proceedings Paper

Huang, Jian¹  Yan, Xingchen^1,2  Chang, Cheng³  Xie, Yingchun¹  Ma, Wenyou¹  Huang, Renzhong¹  Zhao, Ruimin⁴  Li, Shunhua⁴  Liu, Min¹  Liao, Hanlin² 

[1] Guangdong Inst New Mat, Natl Engn Lab Modern Mat Surface Engn Technol, Key Lab Guangdong Modern Surface Engn Technol, Guangzhou 510651, Peoples R China

[2] Univ Bourgogne Franche Comte, UTBM, CNRS, ICB,UMR 6303, F-90010 Belfort, France

[3] Univ Technol Troyes, CNRS, ICD LASMIS, UMR 6281, 12 Rue Marie Curie, F-10004 Troyes, France

[4] Yunnan Yunlu Yongxin Co Ltd, Honghe 654300, Peoples R China

关键词: Selective laser melting;    Pure copper;    Cold spraying;    Microstructure evolution;    Mechanical property;   

DOI  :  10.1016/j.surfcoat.2020.125936

来源: Elsevier

【 摘 要 】

To study effect of the different metal additive manufacturing techniques on microstructural evolution, phase constitution and the relationship between the microstructure and tensile behavior of pure Cu parts, components were manufactured by selective laser melting (SLM) technology and cold spraying (CS) technology, respectively. The microstructure of Cu parts was detected using an optical microscope (OM) and scanning electron microscopy (SEM). The XRD spectrum revealed that only Cu phase is formed in the SLM Cu and CS Cu samples. The microstructure of the SLM Cu samples is constituted by the polycrystalline grains with substructures including the columnar dendrites and the equiaxed structures. As for the CS Cu samples, only the equiaxed grains were detected. In terms of the main physical properties, the averaged electrical conductivity of SLM Cu sample is 41% IACS, while that of CS Cu sample is 73% IACS. For the microhardness, the mean microhardness value of the CS Cu and the SLM Cu samples is 144.2 +/- 4.3 HV0.05 and 83.6 +/- 5.2 HV0.05, respectively. With regard to the statistic mechanical properties, the yield strength (YS) and ultimate tensile strength (UTS) of the SLM Cu part is approximately 185.8 +/- 6.1 MPa and 242.2 +/- 8.2 MPa, respectively.

【 授权许可】

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